JP2001262913A - Closing assisting device for sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety upon fire. SOLUTION: This device comprises a combination of an engaging stopper 21 to be attached to a sliding door 11, an engaging member 22 engaging with or disengaging from the stopper 21, an energizing unit 23 to energize the engaging member 22 in the sliding door 11 closing direction, and a lock mechanism 25 to hold the engaging member 22 detachably. Upon fire, the mechanism 25 releases the engaging member 22 according to a detection signal from a smoke sensor while the unit 23 makes the member 22 engage with the stopper to drive the door 11 in the closing direction. Accordingly, the door 11 can be closed automatically to the limit of closure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door closing assist device which can surely close an automatic closing type sliding door which is opened to an arbitrary opening including an opening limit in a fire.

[0002]

2. Description of the Related Art A self-closing sliding door may be combined with a braking mechanism for stopping the sliding door at an arbitrary opening degree including an opening limit.

[0003] A self-closing sliding door is, for example, a guide rail which is inclined in a closing direction is attached to an upper part of an opening of a building.
It is configured as a hanging door type that hangs freely on a guide rail via a door roller. Thus, the sliding door can be automatically closed by the inclination of the guide rail. In addition, the braking mechanism can stop the sliding door at an arbitrary opening degree by being incorporated in, for example, a sliding door door roller, and can improve the usability of the user. However, the braking mechanism can release the stopped state of the sliding door and automatically close the sliding door by manually operating the sliding door in either the opening direction or the closing direction.

[0004]

In the prior art, the braking mechanism does not release the stop state of the sliding door even in the event of a fire, and prevents the automatic closing function of the sliding door. Cannot be used as a door,
There was a problem that it was inconvenient for safety.

SUMMARY OF THE INVENTION In view of the above-mentioned problems in the prior art, an object of the present invention is to provide an engaging stopper provided on a sliding door, an engaging member engaging and disengaging from the engaging stopper, and an urging unit for urging the engaging member. It is an object of the present invention to provide a sliding door closing assist device which can automatically close a sliding door to a closing limit in the event of a fire by combining the locking mechanism with a locking mechanism, thereby improving safety.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, a construction of the present invention comprises an engaging stopper attached to a sliding door, an engaging member engaging with and disengaging from the engaging stopper, and a closing member for closing the sliding door. An urging unit for urging in the direction, and a lock mechanism for detachably holding the engagement member, wherein the lock mechanism releases the engagement member by a detection signal from the smoke detector,
The gist of the urging unit is to drive the sliding door in the closing direction by engaging the engaging member with the engaging stopper.

The urging unit can drive the sliding door over the entire length of the opening and closing stroke of the sliding door.

The engagement member may be connected to the urging unit via a wire rope passing through the engagement stopper, or may be engaged with the engagement stopper via a cushion material.

Further, the engaging member can be set to the lock mechanism by retracting the sliding door to the open limit,
The guide member can guide toward the engagement stopper.

[0010]

According to the structure of the present invention, the biasing unit drives the sliding door in the closing direction by engaging the engaging member with the engaging stopper, so that the sliding door can be reliably closed in the event of a fire. The engaging member is normally held by the lock mechanism during normal times, and is released from the lock mechanism by a detection signal from the smoke detector in the event of a fire, and is engaged with the engagement stopper by the urging force of the urging unit. Drive the sliding door in the closing direction. However, the urging force of the urging unit is set to be larger than the braking force of the braking mechanism that stops the sliding door at an arbitrary opening.

The urging unit drives the sliding door over the entire length of the opening / closing stroke, so that the sliding door stopped at any position including the intermediate position of the opening / closing stroke and the opening limit can be moved to the closing limit. Can be driven.

When the engaging member is connected to the urging unit via the wire rope, the engaging member is moved by being pulled by the wire rope passing through the engaging stopper, and is securely engaged with the engaging stopper. Can be.

If a cushion material is provided on the engagement member, the engagement member engages with the engagement stopper via the cushion material,
The collision sound at the time of engagement can be reduced, and damage can be effectively prevented.

Since the engaging member is automatically set in the lock mechanism by retracting the sliding door to the opening limit, it is not necessary to perform a special setting operation.

If the engaging member is guided toward the engaging stopper by the guide member, the engaging member moves correctly along the guide member toward the engaging stopper when engaging with the engaging stopper, and the sliding door is provided. There is no danger of accidentally colliding with other members including.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

The auxiliary device for closing a sliding door includes an engaging stopper 21 attached to the sliding door 11, an engaging member 22 engaging and disengaging from the engaging stopper 21, a biasing unit 23, and a lock mechanism 25 as main members. 1 and 2).

The sliding door 11 is suspended from a guide rail 12 attached to a rail base 15 so as to be able to move back and forth. Note that the guide rail 12 is installed so as to be inclined so as to become lower toward the door tip side of the sliding door 11, that is, in the closing direction. Brackets 11a, 11
a, a door wheel 11b rolling on the guide rail 12 via a
11b is mounted. A stopper 11d is provided on the bracket 11a on the door bottom side of the sliding door 11 via an auxiliary bracket 11c toward the door end side of the sliding door 11.

A damper 16 for absorbing shock is fixed to the rail base 15 toward the door end side of the sliding door 11. The damper 16 is installed in parallel with the guide rail 12 via a bracket 16a, and faces the stopper 11d. At the rear end of the guide rail 12, the mounting bracket 1
A leaf spring 17 for braking, which is engaged with the door roller 11b on the side of the door end of the sliding door 11 having an open limit via 7a, is additionally provided.

Therefore, the sliding door 1 which is in the closing limit and is in the fully closed state is provided.
When operated in the opening direction (in the direction of arrow K1 in FIG. 3A), the guide rail 1 moves from the closing limit (FIG. 3A) to the opening limit (FIG. 3B) via the door rollers 11b and 11b.
If the operation in the opening direction is stopped along the opening / closing stroke S along the opening stroke 2 and the opening / closing stroke S is stopped halfway,
It can be stopped at an arbitrary opening by a braking mechanism (not shown) incorporated in 1b and 11b. The opening limit and the closing limit of the sliding door 11 are defined by a door frame 19 incorporated in the wall WL. In addition, the sliding door 11 is configured such that the leaf spring 17 engages with the door roller 11b on the door end side in the opening limit,
It can be lightly locked to the open limit via the leaf spring 17.

On the other hand, the sliding door 11 which is in the open limit and is fully opened
When operated in the closing direction, the braking by the braking mechanism in the door rollers 11b, 11b is released, and the engagement between the door roller 11b on the side of the door end and the leaf spring 17 is released.
Automatically moves to the closing limit by the inclination of and moves to the fully closed state. The same applies to a case where the opening / closing stroke S is stopped at an arbitrary opening in the middle. That is, the sliding door 11
It is a self-closing type. At the end of closing, the sliding door 11 can be smoothly closed without the stopper 11d abutting on the damper 16 and generating an excessive impact.

The engagement stopper 21 is fixed to an upper part of an auxiliary bracket 11c attached to a bracket 11a on the door end side of the sliding door 11 (FIGS. 1 and 2). Engagement stopper 21
Has a through-hole 21a formed in the front-rear direction, and a guide cylinder 21b communicating with the through-hole 21a and having a rear inner surface expanding in a tapered shape is provided on the rear surface of the engagement stopper 21.

The urging unit 23 includes a spiral spring 23a.
Is housed in the case 23b and installed at the front end of the rail base 15. A wire rope 24 is connected to the spiral spring 23 a, and the tip of the wire rope 24 passes through the through hole 21 a of the engagement stopper 21 and engages with the engagement member 22.
It is connected to.

The engaging members 22 are respectively provided on the front and rear surfaces of a disk-shaped main body 22a having a diameter larger than that of the through hole 21a.
A rod 22c with a head 22c1 is formed so as to protrude therefrom.
2d is attached. The holding cylinder 22b is formed to have a diameter sufficiently smaller than the inner diameter of the through hole 21a of the engagement stopper 21 and to be tapered so as to have a tapered tip. The tip of the wire rope 24 is fixed via a set screw 22b1. I have. The engaging member 22 is urged in the closing direction of the sliding door 11 through the spiral spring 23a of the urging unit 23 and the wire rope 24, and the holding member 22b is moved through the through hole 21a.
, It is possible to engage with the engagement stopper 21 via the front cushion member 22d.

The head 22c1 of the rod 22c at the rear of the engaging member 22 is formed to have a smaller diameter than the main body 22a and is tapered. Further, a suspending bracket 22e is provided on the main body 22a so as to protrude in the radial direction.
Is suspended from the guide member 26 so as to be able to move laterally. The guide member 26 is a wire rope, and the guide rail 1
It is installed in parallel with 2. The guide member 26 is inserted into the hanging bracket 22e, one end is fixed to a bracket 26a attached to the front of the rail base 15, and the locking mechanism 2
The other end is fixed to the fifth case 25a.

The lock mechanism 25 is formed by incorporating an engagement hook 25b, a tension spring 25c, and a solenoid 25d into a case 25a. An opening 25a1 having a larger diameter than the head 22c1 of the engaging member 22 is formed on the front surface of the case 25a, and around the opening 25a1, the head 22c1 of the engaging member 22 is guided to the opening 25a1. A guide cylinder 25a2 is provided. Engagement hook 25b
Has a downward hook portion 25b3 formed between the front and rear engaging pieces 25b1 and 25b2, and is fixed to the rotating shaft 25e. The rear engagement piece 25b2 is extended longer below the front engagement piece 25b1. Rotary axis 2
5e is provided with a bell crank 25f having one end connected to a tension spring 25c. The other end of the bell crank 25f is connected to a plunger 25d1 of a solenoid 25d. Further, the tension spring 25c is locked on the top surface of the case 25a.

The lock mechanism 20 includes a switch circuit 25g,
The energization control of the solenoid 25d is performed by combining the sensor 25h (FIG. 4A). The output signal S1 of the sensor 25h and the detection signal Sa from the smoke detector SS are individually input to the switch circuit 25g, and the output of the switch circuit 25g is connected to a solenoid 25d. The smoke detector SS detects smoke and temperature when a fire occurs and outputs a detection signal Sa. Further, the sensor 25h is provided with a case 25a.
Of the head 22c1 of the engaging member 22 with respect to
(B), and outputs an output signal S1.

The switch circuit 25g activates the solenoid 25d when only the output signal S1 is present, based on a combination of the detection signal Sa from the smoke detector SS and the output signal S1 from the sensor 25h (FIG. 4B). . However, FIG.
(B) is an operation explanatory view of the same figure (A).

The sliding door closing assist device operates as follows.

When the sliding door 11 is at the closing limit, the engaging member 2
2 is pulled forward through the spiral spring 23a of the urging unit 23 and the wire rope 24, and is engaged with the engagement stopper 21 (FIG. 3A). Therefore, the engaging member 22
By retracting the sliding door 11 to the opening limit, the sliding door 11 is retracted together with the engagement stopper 21 against the spiral spring 23a (FIG. 4B), and can be automatically set to the lock mechanism 25.

At this time, the engaging member 22 is connected to the opening 25a.
The head 22c1 is inserted into the case 25a through the first cushioning member 1 (in the direction of arrow K1 in FIG. 5A), and the rear cushion member 22d is inserted.
Abuts on the guide cylinder 25a2 of the case 25a through the opening (FIG. 2B), and the head 22c1 is engaged with the engagement piece 25b2.
To the entry limit while contacting the
b can be swung backward (solid line in FIG. 3B). The engaging hook 25b is urged forward via a tension spring 25c (FIG. 2A), and when the head 22c1 of the engaging member 22 is in a state of waiting diagonally downward and forward, the engaging piece 22a at the rear is engaged. This is because, by contact with 25b2 (solid line in FIG. 3B), it swings backward against the tension spring 25c.

Therefore, the sensor 25h of the lock mechanism 25
Detects the limit of entry of the head 22c1 and outputs an output signal S1, and the switch circuit 25g energizes the solenoid 25d to swing the engagement hook 25b further backward (FIG. 5).
(B). At this time, the engagement hook 25b
The front engagement piece 25b1 engages the head 22c1 from the front, and the lock mechanism 25 can hold the engagement member 22 immovably forward.

When the engaging member 22 is set in the lock mechanism 25 in this manner, the sliding door 11 can be freely opened and closed along the guide rail 12 while the engaging member 22 is held by the lock mechanism 25. Sliding door 1 at this time
1 can alleviate the impact when stopping at the opening limit via the cushion material 22d in front of the engaging member 22.

When the sliding door 11 is stopped at the open limit (FIGS. 3B and 5B), when a fire occurs, the smoke detector SS generates a detection signal Sa and the switch of the lock mechanism 25 is switched. The circuit 25g cuts off the current to the solenoid 25d. Therefore, the locking mechanism 25 is
c, the engaging hook 25b is swung forward (FIG. 5).
(A)), the engagement member 22 can be released. Therefore, the urging unit 23 pulls the engaging member 22 forward while winding the wire rope 24 via the spiral spring 23a, and drives the sliding door 11 in the closing direction. Engaging member 22
Is engaged with the engagement stopper 2 via the front cushion material 22d.
This is because it is engaged from behind with respect to 1. That is, the urging unit 23 drives the sliding door 11 in the closing direction over the entire length of the opening / closing stroke S via the wire rope 24, the engaging member 22, and the engaging stopper 21 to automatically close the sliding door 11. it can.

The urging force of the urging unit 23 is set to be larger than the sum of the braking force of a braking mechanism (not shown) provided inside the door rollers 11b and 11b and the braking force of the leaf spring 17 for stopping the sliding door 11 to the open limit. I have.

The engaging member 22 is connected to the door rollers 11b and 11b.
When the sliding door 11 is stopped at an arbitrary opening degree in the middle of the opening / closing stroke S by the braking mechanism provided in FIG.
6 and is correctly guided forward toward the engagement stopper 21 via the front cushion member 22d, and engages with the engagement stopper 21 via the front cushion member 22d (two-dot chain line in FIG. 1). Therefore, the subsequent urging unit 23 includes the engaging member 22 and the engaging stopper 2.
1, the sliding door 11 can be driven to the closing limit. The guide member 26 guides the engaging member 22 while holding the engaging member 22 substantially correctly on the common axis of the opening 25a1 of the lock mechanism 25 and the through hole 21a of the engaging stopper 21 via the hanging bracket 22e. It shall be.

In the above description, the switch circuit 25g of the lock mechanism 25 outputs the output signal S1 from the sensor 25h.
When the solenoid 25d is present, the solenoid 25d is energized by the detection signal Sa from the smoke detector SS, and when the solenoid 25d operates, the energization of the solenoid 25d may be automatically cut off via a limit switch (not shown).

The engagement stopper 21 may be directly fixed to the sliding door 11 via the auxiliary bracket 11c or without the auxiliary bracket 11c. Further, a slit 21a1 for inserting and removing the wire rope 24 in the radial direction may be formed in the through hole 21a of the engagement stopper 21 (FIG. 6A), or a V-groove 21a2 may be formed. Further, the guide member 26 is replaced with a wire rope,
In addition to the guide rod, a guide rail that locks the hanging bracket 22e to be able to move back and forth can be used.

Further, a leaf spring 17 for braking, a door roller 11b,
One of the braking mechanisms in 11b may be omitted. However, when the latter is omitted, the sliding door 11 can be stopped only at the opening limit.

[0040]

As described above, according to the present invention, the engaging stopper provided on the sliding door, the engaging member engaging and disengaging from the engaging stopper, and the engaging member are urged in the closing direction of the sliding door. By combining the urging unit and a lock mechanism that detachably holds the engagement member, when the lock mechanism releases the engagement member based on a detection signal from the smoke detector, the urging unit engages the engagement member. Since the sliding door can be driven in the closing direction by engaging with the locking stopper, it is possible to automatically close the sliding door stopped at an arbitrary opening to the closing limit to improve safety in case of fire. There is an excellent effect that it can be done.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view of the overall configuration.

FIG. 2 is an enlarged perspective view of a main part.

FIG. 3 is an explanatory diagram of an operation (1).

FIG. 4 is an explanatory diagram of an electric system.

FIG. 5 is an operation explanatory view (2).

FIG. 6 is a schematic explanatory view of a main part showing another embodiment.

[Explanation of symbols]

 SS: Smoke detector Sa: Detection signal S: Opening / closing stroke 11: Sliding door 21: Engagement stopper 22: Engaging member 22d: Cushion material 23: Urging unit 24: Wire rope 25 ... Lock mechanism 26: Guide material

Claims (6)

[Claims] An engaging member provided on the sliding door, an engaging member engaging and disengaging the engaging stopper, an urging unit for urging the engaging member in a closing direction of the sliding door, and the engaging member. A lock mechanism for detachably holding the lock member, wherein the lock mechanism releases the engagement member according to a detection signal from a smoke detector, and the urging unit moves the engagement member to the engagement stopper. An auxiliary device for closing a sliding door, wherein the sliding door is driven in a closing direction by being engaged. 2. The sliding door closing assist device according to claim 1, wherein the biasing unit drives the sliding door over the entire length of the opening and closing stroke of the sliding door. 3. The sliding door closing assist device according to claim 1, wherein the engaging member is connected to the urging unit via a wire rope passing through the engaging stopper. 4. The engagement member according to claim 1, wherein the engagement member engages with the engagement stopper via a cushion material.
An auxiliary device for closing a sliding door according to claim 3. 5. The sliding door closing assist device according to claim 1, wherein the engaging member is set to the lock mechanism by retracting the sliding door to an opening limit. 6. The sliding door closing assist device according to claim 1, wherein the engaging member is guided by the guide member toward the engaging stopper.